== sanity test 248c: verify whole file read behavior ===== 03:33:21 (1782632001)
llite.lustre-ffff8dfe2cc27800.read_ahead_stats=c
striped dir -i0 -c2 -H crush2  /mnt/lustre/d248c.sanity
llite.lustre-ffff8dfe2cc27800.max_read_ahead_whole_mb=64
whole file readahead of 64 MiB took 2.79559 seconds
llite.lustre-ffff8dfe2cc27800.read_ahead_stats=
snapshot_time                       1782632005.326301984 secs.nsecs
start_time                          1782632002.342223025 secs.nsecs
elapsed_time                        2.984078959 secs.nsecs
hits                                16382 samples [pages]
misses                              2 samples [pages]
zero_size_window                    1 samples [pages]
failed_to_fast_read                 3 samples [pages]
readahead_pages                     1 samples [pages] 16382 16382 16382
llite.lustre-ffff8dfe2cc27800.read_ahead_stats=clear
llite.lustre-ffff8dfe2cc27800.max_read_ahead_whole_mb=8
non-whole file readahead of 64 MiB took 3.04816 seconds
llite.lustre-ffff8dfe2cc27800.read_ahead_stats=
snapshot_time                       1782632008.932236817 secs.nsecs
start_time                          1782632005.331292517 secs.nsecs
elapsed_time                        3.600944300 secs.nsecs
hits                                16382 samples [pages]
misses                              2 samples [pages]
zero_size_window                    1 samples [pages]
failed_to_fast_read                 3 samples [pages]
readahead_pages                     1 samples [pages] 16382 16382 16382
Test passed on attempt 0
llite.lustre-ffff8dfe2cc27800.max_read_ahead_whole_mb=4